diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 16c33c1..74a6a3d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,6 +4,7 @@ variables:
 image: tianon/latex
 
 before_script:
+    - apt-get update
     - apt-get install -y build-essential
 build:
   script: